Question

why is steel rods mixed on cement and gravel to make bridge


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Answer 1

The main reason is because of its high tensile. A second almost as valid reason is that steel and concrete cement have almost the same thermal expansion coefficient. This means that when concrete/steel composite expands upon heating all the components of the composite.

Answer 2

〰️》Question :-

why is steel rods mixed on cement and gravel to make bridge ?

✔Answer :-

• Concrete is only strong against forces of compression and has low tensile strength and ductility. Reinforcement materials are needed to withstand shear and tensile forces on the concrete. Steel is used because it bonds well with concrete and expands and contracts due to temperature at similar rates.

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